А-5дм=50см
в-3см
Р-?см
S-?см2
Р=(а+в)*2=(50+3)*2=106см
S=а*в=50*3=150см2
Решение
1/2х+1/4х+1/8х+1/16х+3 1/16х=5
8/16х+4/16х+2/16х+1/16х+3 1/16х=4х
4х=5
х=1 1/4
1/2+1/4+1/8+1/16+3 1/16=4*1 14=5=5
<span><span>1) 9 = 3</span><span>²</span>
<span>2) 27 = 3</span><span>³</span>
<span>3) 243 = 3</span><span>⁵</span>
<span>4) 81 =3</span><span>⁴</span>
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